Electrical attachmeitt-plttg



J. G. PETERSON.

ELECTRICAL ATTACHMENT PLUG. APPLICATION' ELEn Dec. l. 1911.

1,313,828. E PatentedAug.19,1919.

' Aar/vey JOHANN G. PETERSON, OF JERSEY CITY, NEW JERSEY.

ELECTRICAL ATTACHMENT-FLUG."

Application led December 1. 1917. 'Serial No. 204.961.

To all whom t may concern:

Be it known that I, JOHANN a citizen of the United States, residing at Jersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Electrical Attachment-Plugs, of which the following is a specification.

This invention relates to an electrical attachment plug. Although it is of primary importance when used infconjunction with what is known as n extension connection, it may be used in whole-erin part in other ways. I have several object-s in view; among these is the provision of an article which is susceptible of' inexpensive mauro facture, quite compact yet in which when occasion is required adequate space is afforded -for bringing together within the plug, the

wires. The appliance comprises other features of novelty .and advantage, which with the foregoing will be stated at lengt-h in the v:followingv description, wherein I will outline in detail that-'form of embodiment of the invention which I have selected for illustration in the drawings accompanying and forming part of the present specification. Obviously I do not restrict myself to this particulardisclosure; I may depart therefrom in several respects within the scope of the invention defined by the claims following said description.

Referring to said drawings:

Figure 1 is a longitudinal section plug involving the invention.

Fig. :2 is a bottom pla-n view of the same.

-Fig .3 is a horizontal section on theline 3'-.3of, Fig. 1, looking in the direction of .of a

thelarrows.

Fig. 4 is a. detail in longitudinal section on the-line 1--1 of Fig. 1, looking in the direction of the arrow.,

Y. Like characters refer to like parts throughout the several views, which are on different scales.

, The applianceinvolves invits structure a multi-part body.`y As shown this body come prises the; sections 2 and 3 which are of some v,.insulil-l material such as a'moldable com- .5o cal form and are separated or spaced apart.

position. They are in the mainfof cylindrito present a chamber or cavity'v 4 surrounded i ,by the shell 5. Itis to be noteud that the shell ,v 5 and certain of its adjuncts turn on the body sections 2 and 3. These body sections Y are. mechanically connected together, as I Specification of Letters Patent.

G. PETERSON,

.rarest-ea nag. as, rare.

will hereinafter explain. The shell how- ,ever, is freely turnable on the body of the plug made up in the present case of thesey two sections. i

The upper body section 2 may as shown .have molded therein the terminals 6 and 7 of suitable conducting material, the inner ends of these terminals 6 and 7 being eX panded as at 8 which presents a convenient way of properly tixedly uniting the terminals 6 and with the body section 3. The latter has an opening 9 through it for the passage of the wires 10 and 11, the free ends of these wires being skinned or bared and being electrically connected with the two terminals 6 and 7. I have shown tapped through these terminals the coaxial Screws l2, the heads of which face outward and are on the outer sides of the terminals. Around the Shanks of the screws on the outer sides of the two terminals, the bared ends of the4 two wires 10 and 11 will be wrapped or coiled one or more times and the screws being fed inward, the wires will be forced .jecting arm or post can be. stamped from sheet metal and plays a part in the conduct of the current. Its periphery is iiush witln the periphery of the body section Q yet the post or arm la is surrounded by the material of 'said body section in which material the arm is naturally embedded so as to properly anchor the same. This varm or post and a companion' arm or post as l5 constitute in effect terminals. The arms 14k and 15 are in parallelism longitudinally of the plug. the 'arm 15 having an inwardly extending-base 16, set in a. channel 17 on the inner side of the body section Q, the sides of kthe channel naturally preventing side movement of the base 16. -This channel intersects the perforation 18 through which the screw 19 extends, the head of the screw extending 'through a registering perforation in the base 16 and holding the base firmly and solidly in the channel.

The threaded end of the screw 19 is connected with the central end contact 20'1'itted against the truncated end of the body section 5'2 and ha ving circumferential lugs 21 diametrirally opposite each other as shown which are embedded in the material ot the body section 2 to thus insure the holding in position under all conditions of the ceni end cont-act. r-is will be clear this ceni end contact is centrally intersected by "he longitudinal axis ot' the plug which co- -ncides with the longitudinal axis of the au' 19, rthe posts or arms lil and l5 have longitudinal slots open atthe free ends of the arms or posts and which are intended for the passage of screws :'23 threaded into the' contacts 6 and 7, the heads of the two screws bearing against the posts 14 and l5 tc press the same when the parts are in the assembled relation against'the terminals 6 and 3. By backing out these tivo screws the posts or arms lll and l5 are unclamped from the terminals 6 and 7 in View of which circumstance if other conditions permit, the body sections 2 and 3 can be longitudinally separated. The shell 5 has at the lower end the inturned flange 24C Which has a bearing upon the ring; 13 and turns on said rino'.

Surrounding the shell 5 which after the customary fashion may be externally threaded to lit the Edison incandescent lamp socket, is the band or ring 25 of insulating material such as composition. This ring 25 lits against the lillet 26 on the shell and is in turn abutted by the ring :27 also ofiinsulat-inp-i matcrial and into 1which the peripheral upper portion of the'shell 5 is expanded. The upper portion ot' the shell 5 is, therefore, protected, so that it can be run into a socket suicient-ly to make electrical connection with the main or supply Without possibility of injury to the manipulaton i The shell 5 has. bet-Ween its ends an opening 28, and the primary purposeof this opening; is to reach the heads of the screws Q3, so that said screws can be backed out to tree the arms let and l5 from the contact-s 6 and 7, so that the body sections 2 and 3 can be separated. When they are thus separated the Twires and l1 -will be mechanicall;-Y and electrically connected With the terminalsb and 'i' as already set forth after which the body sections 2 and 3 will be mechanically connected.

W'hat l claim isz' l. An electrical attachment plug comprising an insulating body in sectionsdistinct and spaced from each other, a contact shell around both sections'of-the body, 'terminals extending from one of the sections of the. lil-orly, said section to which said terminals mnected, having means for the passage et' il es, arms separably connected with sald termnmls inside the shell, one of said arms electrically connected with said coniel, said terminals and arms constitac sole means for mechanically connectingz said insulating sections, a central end contact on the other section of the body electrically connected with the other arm, and means for electrically connecting the wires with said terminals.

Q. An electrical attachment plug comprising an insulating body in sections distinct and spaced from cach other, a contact shell around both sections of the body, terminals extending from one 4of the sections of the body, said section to which said terminals are connected, having;- means for the passage of Wires, arms separably connected with said terminals, inside the shell, one of the arms being electrically connected with said contact shell, and a screw extending through the other of the arms and the other insulating section, and a central end contact litted against said other insulating section and having circumferential means embedded therein and towhich said screw is connected.

3. An electrical attachment plug comprising` an insulating body having a first section and .a second section distinct and spaced from each other, a contact shell around both sections of the body, terminals extending from the first section of the body, said first section having means for the passage of wires, a ring molded in the second section of the body and provided with an arm separably connected with one of said terminals, said ring being also electrically connected with said shell, a second arm separably connected with the other terminal, a central end contact on the second section of the body electrically connected With said second arm, and means Yfor electrically connecting;- Wires with said terminals.

4. An electrical attachment plug' comprising an insulating lbody having a first section and a second section, a contact shell around both sections-ol the body, terminals molded into the first section of the body and inclosed by the shell, an arm having a molded connection with the second section of the body and electrical-ly connected with said shell, said arm being` detachably connected with one of said terminals, a second arm detachably connected with the other terminal, said arms also being inclosed by the shell, a central end contact on the second section of the body electrically connected with said second arm,-and' means for connecting Wires 'with said terminals.

5. An electrical attachment plug comprising an insulating body having a first section and a second section distinct and spaced from each other, the first section having an opening for the passage of Wires, terminals molded'in said first section, a contact shell swiveled around both sections of the body, a ringmolde'd in the second section of the body and provided with an arm having an open slot, a screw extending through the open slotA andl tapped into one of said ter- :nei-3,3255

the other terminal, said second armi being. provided with a "base, a screw extending" through Said base and also through the sec-v ond section of the body, and a centrati' end4 Contact fitted against the second section ot the body and threaded to'receive said last men- A tioned screw, the central end contact being rovided with circumferential lugs pressed into the stock of the second section of the'` body. and means for electrically connecting wires with thesaid terminals.

6. An electrical attachment plug` compris4 ing an insulating body in sections distinct and spaced from each other, a cont-act shell around both sections of the body, terminals extending Jfrom one of the sect-ions 0i' the body, saidlsection. to vW'liich said termina-ls are. connected,vhaying means for the passage 2 o'ivitjes, arms separably connected vwith v said terminal inside the Shelly-one of arms being electrically connected with said aont'act id terminals and arms constitutmeans for mechanically. connectn'sulating sections, a central vend in said body, vand means for electrically oonnecting' the? Wires withv said terminals. In testimony whereof I affix my 'signature in the" presence of two Witnesses.`. JOHANN G. PETERSON.

ff f-L,L.MARKEL',

HEMH SUTHERLANQ.

, theother section'of the bodygelec'. trically connected witlrt-he other arm, thecentral-endcontact hav-ing me'anSem'bedded 3Q 

